Fig. 1From: Molecular evolution and phylogenetic relationships of Ligusticum (Apiaceae) inferred from the whole plastome sequencesThe total length stacked bar chart of 26 Ligusticum plastomes composed of four regions (LSC, IRb, SSC, and IRa). The numbers on the bar represent the length of the four regions. A–K Represents the genes at IR/SC borders. A ycf2; B petB; C rpl22; D rps19; E ycf1/ndhF; F ycf1; G trnN-GUU-ndhF; H trnL-CAA-trnH-GUG; I petB-trnH-GUG; J rps19-trnH-GUG; K rpl2-trnH-GUG. All the SSC/IRa borders are ycf1, which is indicated by asterisksBack to article page